Finding the Fourth Proportional to 2,100.89, 2,899.09 and 1,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.89 : 2,899.09 = 1,156.50 : x
2. Step 2: Convert to fraction form
   2,100.89/2,899.09 = 1,156.50/x
3. Step 3: Cross multiply
   2,100.89x = 2,899.09 × 1,156.50
4. Step 4: Simplify right side
   2,100.89x = 3,352,797.59
5. Step 5: Solve for x
   x = 3,352,797.59/2,100.89
6. Step 6: Final answer
   x = 1,595.89